Gate for mechanical stokers.



W. M. DUNCAN. GATE Fou MECHANICAL sToKBRs APPLICATION FILED MAYG. 1909.

Patented Mar. 8,1910.'

2 SHEETS-*SHEET 1.

l I l l WM. DUNCAN. GATE FOR MECHANICAL STOKERS. APPLIUATION FILEDMAY6,1909.

Patent@ Maw. 8, i910,

@Uhr orientar- WILLIAM MILLER' DUNCAN, OF ALTN, ILLINIS.

GATE FOR MECHANICAL STOKERS.

To 'all who/m it 'may concern: 1

Be 1t known that l, lVlLLIAM M. DUNCAN, a citizen of the United Statesof America,

residing in Alton, in the county of Madison i lated according todifferent grades andsizes of fuel.

The invention has for its objectthe proy duction of a gate ofthe kindnamed in which there are ay plurality of `fireproof members detachablyconnected to a carrier and which may be readily separated, whenimpaired,"

from the carrier to be replaced by new see tions. n

Figure ll is a view partly in. vertical section and-partly in elevationof portions of a furnace and mechanical stolrerzand my gate incorporatedin the Stoker. Figli is a rear elevation of my gate, the Vcentralportion of the gate being broken out. Fig. 1H is a front elevation ofthe gate, the central portion of the gate being broken out. Fig. lV isAa vertical cross section of my gate taken on line IV-IV, Fig. III.

In the accompanying drawings A designates the side frames of amechanical stolzer, between which at their forward ends and formingI theupper part of said side frames is a hopper B, (see Fig. I.) Thesidefranies serve as supports for a traveling1 grate C thatis operablein part atlthe bottom of the hopper B, and said side frames are preferably incorporated into a track thatpermits, of the Stoker elementsbeing moved outwardly, although such construction is not essential in sofar as my improvement is concerned.

D is an ignition arch supported above the traveling grate C in a furnacein which the Stoker is used, and adjacent to which my gate is locatedtoserve as a means for regulating the movement of fuel upon the travclinggrate from the hopper B to the ire chamber of the furnace.

No invention per se is herein claimed for the parts shown in Fig. Iotherthan the gate, these parts having 'beenV described Specification ofLetters Patent.

merely for the purpose of explaining thelocation and utility of my t,ate.

sinks l? and'socket luggslJ (see Figs. H to Patented litar. n, totti.,

Application filed May 6,1969. Serial No. 494,343.

IV, inclusive,) which constitutes the upper 4 portion of my gate and isadjnstably supported by suitablev means such as vertical screw threaded.hanger rods' EZ fitted tothe socket-lugs Al" of thecarrier bar at, theirloaver ends. These hanger rods have preferably secured thereon and havefitted thereto Worin Wheels 3 that are engaged by Worms as indicated atd, (Fig. lig-and through the medium. of which said Worm 'Wheels may ,berotated. upon the hanger rods for the purpose of raising and loweringthe carrier bar l with the parts detachably connected there'- to andwhich enter into the construction. of my gate as will hereinafterappear.`

5 designates a hanger rail suitably secured by screws to the carrier barl at its front side, this hanger rail being of vright angle shape incross section, (as 'seen in Figs. I and IV) and having one (6)' of itsWii'igs extending,- horizontally and forwardly from the carrier bar.Thecarrier bar l is provided With holt holes 7 that receive bolts 8which extend through Athe carrier bar and also preferably through thevertical Wing of the hanger rail These b'olts preferably have theirheads located at the rear sides of the carrier bar and seated in thecountersinlrs la in ,the carrier bar so that their ends are iiush'withthe rear face of the carrier ban-(as seen most clearly in Fig. im)V -Yt) designates detachable hanger plates having horizontal portions 10 attheir upper ends that rest uponA the horizontal Wing of the hanger rail5, and vertical portions bolt holes in the vertical portions 1l of thehanger plates, there being preferably tvvo of'therbolts 8 foreach hangerplate, as illustrated in the drawings.

l2 indicates sections of reproof material, preferably tireclay, that areattached inde -pendently of each other to the hanger plates 9 and whichare, therefore?,susceptible to bein@F removed frornthe carrier bar lWhen the anger platesare detached therefrom.

The horizontal Wing of the Q eeh/iso Each` section l2 is provided with abolt l Agate oi the character described coinholethat receives a boitlef; centrally positioned in the section and extending through thecorresponding hanger plate vwhereby the section cletaehably connected tothe hanger plate in order that it may be separated therefrom in theevent of its becoming impaired in service. The head of each bolty lispreferably countersunlr into the section l2 in which. it is located, andthe cavit7 between the heacl of the bolt and the inner tace o t'thesection. is closed by aiiller 'l5 of lireclav. Eachnsection 12 has arecess 12 glitch receives the lower edge oi the carrier bar.

It. Will be seen thatin the event of either of the ireprooif sections l@of my gate becoming impaired in service, said sections may be readilyreplacefi by ncrv sections Without, disturbance of the vother sections.the only acts necessaif,T for thelreplacing ol'l the previously needsection by a neit7 one l 'being the disconnection of the hanger plate l)supporting section by the removal ot the nnts from the bolts 8 thatconnect said plate tothe carrier-bar andthe removal ofthe enel bolt 1.4that connects the tireproo section to the hanger plate, the attachmentot a new reproof section, and the attachment, of the hang-er plate tothe carrier bar. it isobvious that to eect saving of time in theattaching of a new iireproof' sectionv in place oi' one that has becomeimpaired, the i'ireproof sections to be subsequently used may be kept onhand attached to carrier plates, in order that they may be immediatelyattached to the carrier bar l upon the removal of the previously usedireproo'f section and its hanger plate.

I claim:

l. A gate of the character described coniprising a carrier barhavingbolt holes, a hanger rail having a horizontal Wing, and a vertlcal Wingformed with -bolt holes registering with the bolt holes of fthe carrierbar, means for scouring the hanger rail by its vertical Wing to thecarrier bar, a detachable hanger plate formed with a bolt hole, ahorizontal portion seating on the horizontal iiange and a verticalportion formed with bolt holes registering with the bolt holes of thehanger rail and the carrierbar, a section formed With a bolt hole, andbolts detachably securing the vertical portion and the carrier bartogether, and the section, fletachably, to the hanger plate.

prising' a. carrier bar having bolt holes formed with conntersinls, ahanger rail haring a horizontal. Wing, and a vvertical wing 'formed withbolt holes registering with the bolt holes of the carrier bar, means forcuring the hanger rail by its vertical wing to the carrierbar,a'tlctachable hanger plate formed with a bolt hole, a. horizontal.portion seating on the horizontal i'lange and :i vertical portion formedwith bolt. holes registering with the' bolt. holes of the hanger railand the carrier bar, :i section. 4formed with a bolt hole and boltshaving their heads located in the counter-sinks annldetachably securingthe vertical portion and. the carrier bar together, and meanssecnringvthe section cletachably to the hanger plate.

A. gate of the character described coinprising a. carrier bar havingbolt. holes, a hanger rail havinga horizontal wing, and :i vertical Wingformed with bolt holes registering with the bolt holes of the carrierbar, means for securing the hanger rail by its vertical Wing to thecarrier bar, a detachable hanger plateiornied with :i bolt hole, :ihorizontal portion seating on the horizontal flange and a verticalportion formed with bolt holes registering with the bolt holes of thehangen rail. and the carrier bar, a section formed with a bolt` holehaving a countersinlr and a filler, and bolts detachably securing thevertical portion and the carrier bar together, and the sectiondctachably to the hanger plate.

4. A gate of the character described comprising a carrier bar havingbolt holes, a hanger rail having a horizontd wing and a vertical wingformed with bolt holes registering with the bolt holes of the carrierbar, means for securno' the hanger rail by its vertical Wing to t ecarrier bar, a detachable hanger plate formed with a bolt hole, ahorizontal portion` seating on the horizontal flange, and a verticalportion formeel with bolt holes registerin With the bolt holes of thehanger rail an the carrier bar, a section formed With a recessreceivinff the carrier bar and with a bolt hole, and zliolts detachablysecuring the vertical portion and the carrier bar together, and thesection detachably to the hanger plate.

W'ILLIAM MILLEN DUNCAN.

In the presence of J. N. CRAWFORD, WALTER L. FULLEMEYER.

